Des tributs.” Edit. Daire. Economistes financiers. Paris, 1843, t. I., pp. 413, 419, 417.

Prices of Production Sh. Output Bushels Selling Price £ Proceeds £ Grain-Rent Qrs Money-Rent £ Rate of Sur¬ plus-Profit A 1 3 B 1 21/j+21/j=5 1 6 1/,+ l‘/4 = 13/4 3 3/, 6 0 0 B 1 2V.+2V, 1 2+lV,=3Vs Is/, 6 0 s. D. 7 0 1.